E7-7 R. Santiago Co. uses special journals and a general journal. The following transac tions occurred during May 2017. May 1 R. Santiago invested $40,000 cash in the business. 2 Sold merchandise to Lawrie Co. for $6,300 cash. The cost of the merchandise sold was $4,200. 3 Purchased merchandise for $7,700 from J. Moskos using check no. 101. 14 Paid salary to H. Rivera $700 by issuing check no. 102. 16 Sold merchandise on account to K. Stanton for $900, terms n/30. The cost of the merchandise sold was $630. 22 A check of $9,000 is received from M. Mangini in full for invoice 101; no discount given.